Multicolor-printing press



C. N. GALLAND AND W. A. KELSEY. MULTICOLOR PRINTING PRESS.

APPLICATION FILED SEPT- 22, I917. 1,382,773. Patented June 28, 1921.

3 SHEETSSHEET 1.

' I 6 LL JV glw W. H. ZELSZ'QTD m I k .67 TIM/l? flTTOIR/YEYS C. N.GALLAND AND W. A. KELSEY.

MULTICOLOR PRINTING PRESS.

APPLICATION FILED SEPT-22, 19w.

1,882,773. Patented June 28, 1921.

3 SHEETSSHEET 2.

. Wfl. KELSEY m C. N. GALLAND AND W. A. KELSEY.

MULTICOLOR PRINTING PRESS. APPLICATION FILED SEPT, 22, 1917.

1,38% 778w Patented June 28, 19219 3 SHEETS-SHEET 3- UNITED STATESPATENT OFFICE.

CHARLES N. GALLAND AND WILLIAM A. KELSEY, OF MINNEAPOLIS, MINNESOTA,ASSIGN'ORS TO MULTICOLOR PRINTING AND MACHINERY COMPANY, 01 MIN--NEAPOLIS, MINNESOTA, A CORPORATION OF SOUTH DAKOTA.

MULTICOLOR-PRINTING- PRESS.

Specification of Letters Patent.

Application filed September 22, 1917. Serial No. 192,780.

T 0 all whom it may concern Be it known that we, CHARLES N. GAL- LANDand WILLIAM A. KELsEY, citizens of the United States residing atMinneapolis, in the county of Hennepin and State of Minnesota, haveinvented certain new and useful Improvements in Multicolor-PrintingPresses; and we do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

Our invention relates to printing presses and is an improvement in themeans for multicolor printing. Broadly stated, the invention consists ofthe novel devices and combinations of devices hereinafter described anddefined in the claim.

Particularly, the present invention is in the nature of an improvementon, or refinement of the printing mechanism disclosed and claimed inLetters Patent of the United States, No. 1,040,264, granted of dateOctober 8th, 1912, to Charles N. Galland and Asa P. Brooks, and entitledColor printing attachment for printing presses.

In the accompanying drawings which illustrate the present invention,like characters indicate like parts throughout the several views.Referring to the drawings,

Figure 1 is a View in side elevation with some parts broken away andsome parts removed, illustrating our invention as applied to a printingpr ess of the type known as a drum printing press, and, in which, paperis carried by a cylinder onto the type of an oscillatory table;

Fig. 2 is a plan view of the ink font or trough and associated parts ofthe color printing device or attachment;

Fig. 3 is a view partly in plan and partly in horizontal section on theline 33 of Fig. 1;

Fig. 4 is a view partly in elevation and partly in vertical section onthe line 44 of Fi 5; and

Fig. 5 is a vertical section approximately on the line 5-5 of Fig. 2.

Of the parts of the press proper, it is sufficient for. the purposes ofthis case to note the frame 6, the paper feed cylinder 7, thereciprocatory table 8 which carries the type form, the large gear9carried by the shaft of the cylinder 7, and the pulley driven pinion 10which drives the gear 9 through intermediate gear 11.

The color printing device orattachment .which embodies our inventionwill now be described.

The various parts thereof are supported by two heavy laterally projectedframe brackets 12 that are rigid with the sides of the main frame 6. Forprinting in colors in the proper space on the paper sheet carried by thefeed cylinder 7, is a multicolor type drum 13, the shaft 14 of which isjournaled in bearing boxes 15 that are removably held in open seatsformed in the brackets 12, and are therefore, detachably held in workingposition, as shown, by novel means including a lock arm 16 andcooperating lock dogs 17, both of which are pivoted to the brackets 12.The dogs 17 interlock with the free upper ends of the arms 16 to holdthe same in working position, and the said arms are provided with setscrews 18 that impinge against the boxes 15, as best shown in Figs. 1and 3. Set screws 19 which oppose the set screws 18, work through thebrackets 12, so that by the cooperating opposing set screws 18 and 19,the boxes 15 may be set at any desired adjustment. At the same time,simply by raising the lock dogs 17 and turning down the arms 18, thebearing boxes 15, together with the shaft 14 and type drum 13, may bereadily slid from working position and removed. Of course, by reverseoperatiom-thy may be replaced. This removal and replacement of the saidparts is accomplished without changing the properly set adjustment ofthe set screws which determine the position of the type drum 13 inrespect to the main cylinder 7.

At one projecting end, the shaft 14 is tapered and fits the tapered boreof a gear hub 20 that has a projecting annular flange 21. Mounted on thehub 20 is a small spur gear or pinion 22 that is meshed with the largerspur gear 9 which, as noted, is carried by the shaft of the maincylinder 7 The pinion 22 is secured to the hub 20 for rotationtherewith, but is made circumferentially adjustable, by means of shortnut-equipped bolts 23 passed through the flange 21 and having PatentedJune 28, 1921.

their heads seated in circumferentially extended T-grooves 24 formed inthe said pinion 22. This adjustment permits the type drum 13 to be setfor properl tuned relation and position in respect to t e main cylinder7 and the sheet of paper fed over the same, to the type carried by thesaid type drum 13.

Located above. and out of contact with the type drum 13 is an inkdistributing drum of novel construction, and which is made up of amultiplicity of narrow wheels or pulley-like drum sections 25 that areall of the same diameter, so that when any number thereof are groupedtogether, they form a smooth cylindrical ink distributing surface. Theseso-called drum sections 25 have hubs through which is passed a shaft 26that is mounted, both for rotary and for endwise movements in suitablebearings afforded by the bearing brackets 12. The shaft 26, at one end,just inward of the adjacent brackets 12, is provided with a spur gear27, and just outside of said bracket is provided with a cam hub 28 whichhas a profile cam groove that extends oblique to a plane at a rightangle to the axis of said shaft. Working in the oblique cam groove ofthis cam hub 28 is a roller-equipped stud 29 mounted on the projectingarm 30 of the adjacent bracket 12 (see .Fig. 4). The stud 29 and cam hub28 codperate to produce a slow endwise movement of the shaft 26 and ofthe sectional distributing roller 25, when said shaft and distributingroller are rotated. The shaft 26 is rotated from a. spur gear 31 carriedby the shaft 14 of the type drum 13 through an intermediate pinion 32which is mounted on a stud 33 (see Fig. 4), which, in turn, is arrangedto slide in the adjacent bracket 12 and is adapted to be set in eitherof two positions by the engagement of a spring latch or detent 34 onsaid bracket that engages with either of two grooves 35 in said stud.

The endwise movement imparted to shaft 26 is not sufiicient to carrygear 27 out of mesh with pinion 32, when the latter is set at the left,as shown in full lines in Fig. 4; but when the said pinion is set in itsdotted line position, Fig. 4, it will be moved out of mesh with the saidgear 27, and the latter will not then be driven from the gear 31,

Returnin to the construction of the sectional distributing drum, it willbe noted that the sections 25, in certain of the radial arms, have smallkeys or splines 35 (see Fig. 5) that engage longitudinal keyways formedin the shaft 26. The said keys 35 are mounted in radial bores formed incertain of the arms of the drum sections 25, and they are yieldinglypressed inward by coiled springs 36 that are compressed between themean/7e extremities of said arms and turned over flush with the smoothperipheries of the drum sections (see Fig. 5). The keys 35 are made tobottom in the keyways 26, so that under the force of the springs 36,there will be sufficient friction produced to prevent accidentalslipping of the said drum sections 25. Otherwise stated, the said drumsections may be slid longitudinally on the shaft 26 and assembled ingroups of any desired number with the proper gaps between the groups, asshown in Fig. 2, for example, and they will remain set just as they areassembled in this group, regardless of the otherwise movements impartedthereto, and to the shaft 26.

To maintain the counterbalance of the shaft 26 and sectionaldistributing drum, said shaft is preferably provided with keyways 26 atdiametrically opposite points, so that the engagement of the keys 35 ofthe successive drum sections 25, with the said two keyways, may bealternated.

The type for printing in different colors on the sheet carried by themain cylinder 7 are curved or of sectional formation, and are suitablysecured to the periphery of the type drum 13. I These type, hereinindicated at 38, are secured on the type drum by suitable means, notnecessary here to consider,

except to state that of course, thosethat are to print a certain colorwill be properly alined with the paper that is fed over the maincylinder 7.

Running in contact with the sectional distributing roller 25 and withthe type on the drum 13 are ink distributing rollers 39 which may behere designated as the form rollers. The shafts of these rollers 39 arecarried in suitable adjustable bearings on the brackets 12 and the saidrollers are driven by. frictional contact with the roller 25 and facesof the type.

The so-called form rollers 39 (see Fig. 1), are shown as journaled inadjustable bearmg arms 39 that are pivoted to the brackets 12 andsubject to adjusting screws not necessary for the purposeof this case tofurther consider.

Working over and in contact with the upper surface of the sectionaldistributing drum 25 is a group of distributing rollers 40, the shaftsof which are also journaled in suitable bearings on the brackets 12.These distributing rollers 40 have shafts 40 that project at their endsand engage open seats 40 of the brackets 12, (see Fig. 2).

The ink font is made up of an inclined trough plate 41 and a fountainroll 42. The said plate 41 is formed with end plates 41 in which theshaft 42 of the roll 42 is journaled, and in which the ends of said rollclosely engage. The body proper of the ink font is formed by a thinmetal plate 43 (see Fig. 5) which, by means of adjusting screws 44,isadapted to be pressed into close engagement with the surface of roll 42,thus forming a receptacle which will hold the thick printing ink.

At one end, the shaft 42 of the fountain roll 42 projects and isprovided with a.

ratchet wheel 45 (see Fig. 1) that is engaged by the dog of adog-equipped arm 46 that is mounted to oscillate on said shaft. Theshaft 26 of the sectional distributing drum, at one end, is providedwith a small spur pinion 47 (see also Fig. 1) that meshes with a spurgear 48 journaled to the u per proj ection of one of the brackets 12.his gear 48 is provided with an adjustable throw crank pin 49 that isconnected to the free end of the dog-equipped arm 46 by a short crankrod 50. By the connections just described, a step by step rotarymovement is imparted to the fountain roll 42 through the pawl andratchet device, and the amount of movement imparted thereto at eachthrow may be varied by radial adjustments of the crank pin 49.

Working within the ink font and closely fitting the bottom 43 thereof,and adjacent surface of the fountain roll 42, are laterally adjustablepartitions 51 that are intended and adapted to be set in alinement withthe gaps between the groups of sections 25 of the distributing drum. Inthe outer ends, the font partitions 51 are formed with deep notches inwhich are set outwardl springpressed clamping plungers 52. The saidplungers are shown in position in Figs. 2 and 5. These plungers 52 pressagainst a flange bar 53 secured to the outer portion of the font plate41. By means of the frictional clamping devices afforded by the saidplungers, the partitions 51 are tightly pressed against the font roll42. The curved inner edges of these partitions are formed to fit theroller 42 and they are provided with channels 54 (see Fig. 2) that areadapted to be filled with paraffin wax, or the like, as paraffin wax notonly forms a close contact with the roller but serves to keep the samelubricated so that the ink from the different compartments of the fontwill not be carried by capillary attraction from one side to another ofthe partitions.

For carrying the ink from the font roller 42 onto the sections 25 of thedistributing drum, there is provided a so-called carrier roll 55, theshaft of which projects at its ends and is journaled in the pronged freeends of arms 56 of a rock shaft 57 (see Figs. 1 and 5). The rock shaft57, at one end, is provided with a long arm 58 (see Fig. 1)

aving a roller-equipped stud 59 at its free end that is subject to aprofile cam 60 which is carried by the gear 48, already noted. The cam60 is pre erably .so designed that it holds the transfer roll 55 incontact with the font roll 42 for about of the rotation of the gear 48,holds the said transfer roll in contact with the distributing drum 25for another approximate rotation of said gear,

and imparts the movement of the said trans- Operation.

The operation of the color printing device described is probablyunderstood from the description alread given but may be briefly summedup as fol ows:

The sections 25 of the distributing drum are adjusted to correspond tothe spaces on the paper fed by the cylinder 7, and upon which, printedor other matter is to be printed in the various colors. Also, as stated,the partitions 51 will be set in line with the gaps between theassembled sections of the distributing drum. The different colors of inkwill be, of course, contained in the proper compartments of the inkfont. These different colors of ink will be carried from the font by thefont roll 42, and, by the transfer roll 55, will be transferred onto theassembled sections of the distributing drum 25. By the rolls 37, the ink,will be should slightly run together, any commingled ink will not bedelivered onto the distributing drum because such would be in alinementwith the gaps between the sections thereof. The different colors of inkdelivered by the distributing drum 25 to the form rolls 39 will not runtogether, because they are given a good separation by the gaps betweenthe sections of the said distributing drum. Thus, the several colors ofink are kept distinct, so that they will not be blended or mixed intheir delivery to the type.

It will, of course, be understood that in the customary use of the colorprinting attachment, the main printing in black will be done in theusual way by type carried by the type form of the oscillating table 8.11; must also, however, be understood that the type on the type drum 13for printing in colors will usually be arranged to print in blank spacesleft therefor in the said form of the table 8. However, when desired,the

In fact, the color printing attachment may be also used in a very largenumber of difierent ways, but in all cases, the drum 13 which carriesthe type for printing the colors, must be properly timed in respect tomovement of the feed table and main cylinder 7.

What we claim is:

The combination with a printing press having printing devices includinga paper delivery cylinder, of an auxiliary print ng drum having typethereon for printing in difierent colors on the paper delivered by saidcylinder, an automatic multicolor ink device cooperating with saidauxiliary drum and comprising a distributing drum made up of amultiplicity of groups of thin axially shiftable drum sections assembledwith gaps between the groups, and an ink font having partitions adaptedto be alined with the gaps between the said assembled.

CHARLES N. GALLAND. .WILLIAM A. KELSEY.

Witnesses:

CLARA DEMAREST, F. D. Mnnonmnr.

